The Secret Service says standard security protocol requires the president to fly on either Air Force One, a jumbo jet, or Marine One, a helicopter. The agency says Trump was never on the helicopter.

It's hard to miss: The Sikorsky S-76 carries Trump's name in bold red print on the tail and step, and his personal family seal. The billionaire turned president owns two.

The helicopter appeared Sunday on the newly paved helipad of Mar-a-Lago, then left a few hours later. The White House didn't respond to questions about the reason the helicopter was there.